重力式联合土层锚杆挡土墙支护高路堤技术研究.pdf

2015年3月上 施工技术 第44卷第5期 CONSTRUCTION TECHNOLOGY 95 D0I:10.7672/sgjs2015050095 重力式联合土层锚杆挡土墙支护高路堤技术研究* 张宏博1.2，岳红亚2，吴建清12，宋修广1 2 (1 山东大学土建与水利学院，山东济南250061；2.山东省路基安全工程技术研究中心，山东济南250061) [摘要]重力式联合土层错杆挡土墙是由传统重力式挡土墙联合土层锚杆形成的一种新型挡土墙.由于杆的施 加，挡墙土压力分布规律发生了明显改变.为了揭示该类型挡土墙在施工期和运营期的受力特性，结合长深线青 临高速第3合同段工程，现场埋设土压力盒、铺杆测力计等监测仪器，对挡土墙进行了土压力及铺杆受力监测.监 测结果表明，增加填土高度、安置锚杆及运营期的增加都对侧向土压力的影响很大，侧向土压力量形分布.上层 锚杆表现为受压，压力值近墙端往远端不断减小，下层铺杆表现为受拉，锚杆中间位置拉力最大. [关键词]公路工程；重力式挡土墙；铺杆；支护；土压力 [中图分类号]U417.11 [文献标识码]A [文章编号]1002-8498(2015)05-0095-04 Study on Support Technology of High Embankment by Gravity Retaining Wall Combined with Soil Anchor Zhang Hongbo.2 Yue Hongya'.2 Wu Jianqing'.2 Song Xiuguang.2 (1.School of Civil and Hydraulie Engineering Shandong University Ji'nan Shandong 250061 China; 2.Shandong Engineering Technology Research Center for Subgrade Safety Ji'nan Shandong 250061 China) Abstract:Gravity retaining wall bined with soil anchor is a new type of retaining structures.It is based on traditional gravity retaining wall.As the adding of soil anchor the soil pressure distribution changed obviously.In order to research the mechanical characteristics of gravity retaining wall bined with soil anchor during construction and operation the gravity retaining wall bined with soil anchor engineering in Qingzhou-Linshu highway of Changchun-Shenzhen line was chosen to study.Soil pressure cell and axial force meter were buried to monitor soil pressure and anchor force.The monitoring result showed that the addin...